static void ReadElement()
{
string str;
DesType des;
if (la.kind == stringLit_Sym)
{
StringConst(out str);
CodeGen.WriteString(str);
}
else if (la.kind == identifier_Sym)
{
Designator(out des);
if (des.entry.kind != Kinds.Var)
{
SemError("wrong kind of identifier");
}
switch (des.type)
{
case Types.intType:
case Types.boolType:
CodeGen.Read(des.type); break;
default:
SemError("cannot read this type"); break;
}
}
else
{
SynErr(53);
}
}
static void WriteElement()
{
int expType;
string str;
if (la.kind == stringLit_Sym)
{
StringConst(out str);
CodeGen.WriteString(str);
}
else if (StartOf(11))
{
Expression(out expType);
if (!(IsArith(expType) || expType == Types.boolType))
{
SemError("cannot write this type");
}
switch (expType)
{
case Types.intType:
case Types.boolType:
CodeGen.Write(expType); break;
default:
break;
}
}
else
{
SynErr(54);
}
}
static void HaltStatement()
{
Expect(halt_Sym);
if (la.kind == lparen_Sym)
{
Get();
Expect(stringLit_Sym);
CodeGen.WriteString(token.val);
Expect(rparen_Sym);
}
CodeGen.LeaveProgram();
ExpectWeak(semicolon_Sym, 6);
}